Monitoramento de Enterobacteriaceae e Staphylococcus spp. na linha de produção de leite em pó de uma indústria de laticínios de Minas Gerais utilizando metodologias tradicional e rápida
AUTOR(ES)
Marcelo Augusto Ferraz
DATA DE PUBLICAÇÃO
2009
RESUMO
This job aimed to assess the presence of Enterobacteriaceae in the powder milk production chain and the influence of the pre-enrichment to number the Enterobacteriaceae. Another experiment aimed to accomplish the analysis of the 2073/2005 Directive from European Union: Enterobacteriaceae, Staphylococcus coagulase positive and its enterotoxins. It was used both traditional and fast methodologies. When the methodologies were compared, it was observed the equivalence between them (p >0, 05). When the counting of Enterobacteriaceae in the raw milk related to the other positions, there was a significant difference (p <0, 05). From the thirty samples of milk powder, only two presented positive result to Enterobacteriaceae, even though only one of them does not answered the 2073/2005 Directive (20UFC/g). There was equivalence between both the traditional methodology and the 3M Petrifilm Enterobacteriaceae (p >0, 05). To the Staphylococcus analysis there was a difference between both the traditional methodology and the 3M Petrifilm Staph Express (p >0, 05), since the first presented typical and atypical colonies in the Baird-Parker main, but all presented negative result to the coagulase test. Using the 3M Petrifilm mean it was ensured the presence of S. aureus in 46,7% of the samples. To the staphylococci enterotoxins, 100% of the tested samples presented negative result
ASSUNTO(S)
estafilococos teses enterobacterias teses enterotoxinas teses leite em pó qualidade teses leite em pó teses veterinária teses
ACESSO AO ARTIGO
http://hdl.handle.net/1843/SSLA-7V3KJ4Documentos Relacionados
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